<template>
  <el-dialog width="500px" title="员工导入" :visible="showExcelDialog" @close="$emit('update:showExcelDialog', false)">
    <el-row type="flex" justify="center">
      <div class="upload-excel">
        <!--  2. 监听input的chang事件 -->
        <input ref="uploadRef" class="excel-upload-input" type="file" accept=".xlsx, .xls" @change="onUploadFile">
        <div class="drop">
          <i class="el-icon-upload" />
          <el-button type="text" @click="onDownLoadTemp">下载导入模板</el-button>

          <span>将文件拖到此处或
            <el-button type="text" @click="onUpload">点击上传</el-button>

          </span>

        </div>

      </div>

    </el-row>

    <el-row type="flex" justify="end">
      <!-- update:props属性名，值 直接修改 .sync修饰符的属性值 -->
      <el-button size="mini" type="primary" @click="$emit('update:showExcelDialog', false)">取消</el-button>

    </el-row>

  </el-dialog>

</template>

<script>
import { getExportTemplateAPI, uploadExcelAPI } from '@/api/employee'
import { saveAs } from 'file-saver'

export default {
  props: {
    showExcelDialog: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    async onDownLoadTemp() {
      const res = await getExportTemplateAPI()
      saveAs(res, '员工导入模板.xlsx')
    },
    onUpload() {
      this.$refs.uploadRef.click()
    },
    async onUploadFile(e) {
      try {
        // 3. 通过e.target.files去找文件

        const files = e.target.files
        if (files.length === 0) return

        // 4. FormData 把文件追加到FormData对象中
        const formData = new FormData()
        formData.append('file', files[0])
        // 5. 调用接口

        await uploadExcelAPI(formData)
        this.$emit('update:showExcelDialog', false)
        this.$message.success('导入成功')
      } catch (error) {
        console.log('  ----->  ', error)
      } finally {
        // 6. 修复小问题
        this.$refs.uploadRef.value = ''
      }
    }
  }
}
</script>

<style scoped lang="scss">
.upload-excel {
  display: flex;
  justify-content: center;
  margin: 20px;
  width: 360px;
  height: 180px;
  align-items: center;
  color: #697086;

  .excel-upload-input {
    display: none;
    z-index: -9999;
  }

  .btn-upload,
  .drop {
    border: 1px dashed #dcdfe6;
    width: 100%;
    height: 100%;
    text-align: center;
    line-height: 160px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .drop {
    line-height: 40px;
    color: #bbb;

    i {
      font-size: 60px;
      display: block;
      color: #c0c4cc;
    }
  }
}
</style>
